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Best boiler installation pros near Oswego, NY

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    Average homeowner rating
  • Verified reviews icon133
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Oswego - Updated Nov 2026

Avatar for 4 Power Now Inc.
4 Power Now Inc.
3.8(
28
)
Gas Boiler or Radiator Heating System - Install

Serving Oswego, NY and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Outstanding from first meeting & purchase to 24Kw Generac's first start up. Amanda Tallman is completely thorough explaining all installation steps & the numerous items pertaining to this model. On the final day, in the rain, alone Amanda improved the propane line installed by gas supplier. We were so grateful for installation before cold weather & frozen ground occurs. Completely SATISFIED with 4 POWER NOW Roger Sevilla Throop Township."
Clay Generator After
22 kw Generac
Manlius Generator
East syracuse generator
Auburn Generac Generator

+1

Response time2 days
Recommended by78%of homeowners
Avatar for GreenHomes America
GreenHomes America
4.4(
31
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Oswego, NY and surrounding areas

In business since 1980

Free estimates

Emergency services offered

"I called Green Homes, Home Depot, and Comfort for estimates.  Prices for Green Homes and Home Depot were nearly identical.  Green Homes took more time to explain the features of the windows, show a sample, give considered opinons on options when I requested them, and didn't have extra costs that Home Depot did.  I ended up cancelling the comfort estimate.  I've used them before, and was happy to try someone else. 
They came out right away for the final measurement and gave a tentative date for install.  I called a week or so later, and they confirmed the date, which was only about 3 weeks.  Just after 5 on the Friday before the install I realized I never got a confirmation call, and they were closed so I couldn't call.  But no worries, at about 8:30 Monday morning they pulled in.  Jeff, Jeff, and Mark were great all day.  They did the rooms that I needed done first first, and the room that I  needed last last (moving some furniture around).  They got the inside work on the 12 windows, including trim replacement, done day 1.  Day 2 they arrived again about 8:30 and quickly installed the slider door, then began the outside wrapping.  In the pouring rain.  They're due back for about 1/2 day tomorrow to finish the wrapping outside. 
The windows seem like very good quality.  They missed the grids on 1 window, but the guys knew it and told me as soon as they arrived on day 1.  They installed the wrong window, and will be back out when the correct one is received.
I wouldn't hesitate to call these guys again for service. 

"
Window Example
Window Example
Window Example
Recommended by84%of homeowners
Avatar for 4 Green Power Systems, LLC
4 Green Power Systems, LLC
5.0(
4
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Oswego, NY and surrounding areas

In business since 2018

Free estimates

Emergency services offered

4 Green Power Systems, is you 1 stop shop for a turn-key Contractor. For Generac Automatic Generac Generators we have been awarded both the Elite Status and PowerPro by Generac. Mitssubishi Ductless has awarded us Diamond Contractor status, Samsung heat-pumps has awarded us Premier status and GeoStar GeoThermal HVAC systems. We design it, sell it, install it and service what we sell. With over 40 years in the business we do it right the 1st time.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+46

Recommended by100%of homeowners
Avatar for Johnny B. Goode Heating and Air Conditioning - Home  Facebook
Johnny B. Goode Heating and Air Conditioning - Home Facebook
4.5(
7
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Oswego, NY and surrounding areas

In business since 2012

Free estimates

Emergency services offered

"Hired Johnny B Goode to install mini split heat pump to a new construction. Unit is up and running. John had to make a couple trips in order to make this install happen with the other parts of the home construction. He was good about collaborating with the other contractors and at the end all came together nicely. Saved a few hundred dollars going this route. I would recommend Johnny B Goode Heating."
Response time11 hrs
Response rate88%
Recommended by100%of homeowners
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Install Boiler FAQs, answered by experts

If you have a closed-system boiler that requires an expansion tank, you cannot safely operate it without one, as this risks extensive damage or even explosions. You must find a way to make room for the installation. Options include repositioning the boiler, rerouting the boiler piping to a more open area, or performing minor remodeling to create the necessary space. If you are unsure whether your boiler needs an expansion tank or how to best accommodate one, it's recommended to have a local heating service professional assess the situation. They can confirm the requirement and suggest the most practical solution.

The absence of heating or hot water, unusual noises like banging or gurgling, and visible water leakage are key signs. Abnormal boiler pressure, flame irregularities (for gas boilers), or pilot light issues may also signal trouble. Frequent cycling, soot or staining, and unusual odors, particularly gas-like smells, should not be ignored. Modern boilers often display error codes or lockout mode upon detecting issues. Uneven heating across radiators and rising energy bills without increased usage can further point to problems. Prompt attention to these signs is essential to prevent further damage and ensure safety.

The average cost to replace or install a new HVAC system is around $7,500. However, the price can range from $5,000 to $12,500, depending on factors like the size of your home, the type and brand of the unit, and your specific heating and cooling needs. If you only need to replace certain components, the cost will be lower; for example, a new AC unit can cost between $2,200 and $5,500, while a new furnace costs $3,200 to $6,000. If additional work like new ductwork is required, the total cost could be as high as $22,000. It's best to contact a local HVAC company for an accurate quote.

Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater.

Boiler installations and replacements cost between $3,600 to $8,400. Expect to pay around $5,900 on average for a new boiler, including installation. Adding new radiators or heaters to the boiler may include separate costs if you are also upgrading those components, so the final price may be higher. To decrease costs, you can look for local energy rebates for using a boiler and wait until installers are offering discounts for a first-time installation.

The Oswego, NY homeowners’ guide to boiler installation services

From average costs to expert advice, get all the answers you need to get your job done.